package Thread;

public class Demo12 {
    public static void main(String[] args)throws Exception {
        Thread t=new Thread(()->{
            for(int i=0;i<3000;i++) {
                System.out.println("hello thread");
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
            }
        });
        t.start();
        t.join(3000);//等待线程t执行完毕
        System.out.println("main 线程结束1");
    }
}
